 var flag = true;
    $(".qy-sj").on("click",function(){
    	if(flag){
    		$(".div-top").css('border-color', 'transparent transparent #777777 transparent');
    		$(".div-boom").css('border-color', 'transparent transparent #00B1D7 transparent');
    		flag = false;
    	}else{
    		$(".div-top").css('border-color', 'transparent transparent #00B1D7 transparent');
    		$(".div-boom").css('border-color', 'transparent transparent #777777 transparent');
    		flag = true;
    	}
    	
    })